Analysis of information sources in references of the Wikipedia article "شاهنشاهی ایران" in Persian language version.
One characteristic of the Parthians that the kings themselves maintained was their nomadic urge. The kings built or occupied numerous cities as their capitals, the most important being Ctesiphon on the Tigris River, which they built from the ancient town of Opis.
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: نگهداری یادکرد:ربات:وضعیت نامعلوم پیوند اصلی (link)